指标主要用于识别主力资金可能开始建仓或试盘的关键K线。通过综合判断成交量突增、价格位置、均线排列、MACD与KDJ等技术信号，筛选出符合强势特征的交易日，并在图上标记为“关键K”。操作策略上，当出现标记时，视为潜在买入信号，尤其适用于低位放量、趋势初起阶段。系统排除近期涨停干扰，强调量价配合与多因子共振，提升信号可靠性。
{关键K线因子}
ZTJ:=ZTPRICE(REF(C,1),0.1);
DIF:=EMA(CLOSE,12)-EMA(CLOSE,26);
DEA:=EMA(DIF,9);
MACD:=(DIF-DEA)*2;
XG1:=MACD>0;
K线实体:=ABS(C-O);
VARG1:=IF(MA(C,5)>MA(C,10),20,0);
VARG2:=IF(MA(C,20)>MA(C,60),10,0);
VARG3:=IF(KDJ.J>KDJ.K,10,0);
VARG4:=IF(MACD.DIF>MACD.DEA,10,0);
VARG5:=IF(MACD.MACD>0,10,0);
VARG6:=IF(V>MA(V,60),10,0);
VARG7:=IF(WINNER(C)>0.5,10,0);
VARG8:=IF(C/REF(C,1)>1.03,10,0);
XX:=VARG1+VARG2+VARG3+VARG4+VARG5+VARG6+VARG7+VARG8;
涨停板1:=C=H&&C/REF(C,1)>1.0975&&C/REF(C,1)<1.11&&FINANCE(3)=1&&C=ZTJ;
涨停板2:=C=H&&C/REF(C,1)>1.1985&&C/REF(C,1)<1.21&&FINANCE(3)=3;
涨停板:=涨停板1||涨停板2;
双倍量:=(V/REF(MA(V,5),1)>=2&&V/REF(V,1)>=1.5||V/REF(V,1)>=2)&&C>O&&H=HHV(H,6)&&C>EMA(C,13)&&V=HHV(V,6);
建仓量:=TFILTER(双倍量&&K线实体>REF(K线实体,1),EVERY(V<MA(V,5),2),1);
JCZQ:=BARSLAST(建仓量);
拉升量:=双倍量&&NOT(建仓量)&&EXIST(建仓量,2);
试盘量:=建仓量||拉升量;
位置要求:=L/EMA(C,13)<1.05;
红线上行:=EMA(C,13)>=REF(EMA(C,13),1);
SPX0:=H/REF(C,1)>=1.03&&试盘量&&H/C>1.005&&C/REF(C,1)>1.015&&位置要求&&FINANCE(3)=1&&XX>=40;
SPVARG1:=H/REF(C,1)>=1.05&&试盘量&&H/C>1.005&&C/REF(C,1)>1.015&&位置要求&&(FINANCE(3)=3||FINANCE(3)=4)&&XX>=40;
SPVARG2:=SPX0||SPVARG1;
SPVARG3:=SPVARG2&&COUNT(SPVARG2,8)&&COUNT(涨停板,2)=0;
试盘K线:=FILTER(SPVARG3,5);
建仓:=FILTER(涨停板&&建仓量&&COUNT(涨停板,3)=1,10);
关键K:=试盘K线||建仓;
STICKLINE(关键K,H,L,0,0),COLORFF55FF;
STICKLINE(关键K,C,O,3.1,0),COLOR880088;
STICKLINE(关键K,C,O,2.6,0),COLORAA00AA;
STICKLINE(关键K,C,O,1.9,0),COLORCC00CC;
STICKLINE(关键K,C,O,1.1,0),COLOREE00EE;
STICKLINE(关键K,C,O,0.2,0),COLORFF44FF;
DRAWTEXT(关键K,L,'★关键K'),COLORYELLOW;
DRAWICON(关键K,L,9);
A1X:=关键K;
IF(A1X>=0&&BARSLAST(CROSS(A1X,0.5))>0,REF(L,BARSLAST(CROSS(A1X,0.5))),DRAWNULL),LINETHICK4,COLORMAGENTA;
